ASM-1 Circuit Board Parts List

[gstopp at fibermux.com]

     Hi DIY list,
     
     Here's the parts list for the ASM-1 circuit board:
     
     Active components:
     
     (5)  CA3140
     (4)  CA3080
     (19) Dual op-amp, TL082, LM358, etc.
     (2)  CD4002
     (2)  CD4053
     (2)  2N4856 N-channel JFET
     (6)  2N3904 NPN transistor
     (2)  2N3906 PNP transistor
     
     Trimpots:
     
     (13) 100K 10-turn trimpot
     (2)  10K 10-turn trimpot
     (1)  100 ohm 10-turn trimpot
     
     Passive components:
     
     (6)  1N4148 Diodes or equivalent
     
     (4)  22   ohm resistor
     (6)  220  ohm resistor
     (1)  390  ohm resistor
     (2)  470  ohm resistor
     (2)  680  ohm resistor
     (10) 1K   ohm resistor
     (2)  1.5K ohm resistor
     (3)  2K   ohm resistor
     (2)  3K   ohm resistor
     (2)  3.3K ohm resistor
     (7)  10K  ohm resistor
     (4)  15K  ohm resistor
     (2)  18K  ohm resistor
     (1)  27K  ohm resistor
     (1)  33K  ohm resistor
     (5)  47K  ohm resistor
     (2)  56K  ohm resistor
     (51) 100K ohm resistor (at least 2 1%)
     (1)  150K ohm resistor
     (2)  200K ohm resistor
     (1)  270K ohm resistor
     (1)  330K ohm resistor
     (6)  560K ohm resistor
     (7)  1M   ohm resistor
     (4)  1,5M ohm resistor
     (2)  2M   ohm resistor
     
     (2)  18pf     capacitor
     (2)  30pf     capacitor
     (4)  100pf    capacitor
     (2)  330pf    capacitor
     (1)  0.001uf  capacitor
     (2)  0.0022uf capacitor
     (3)  0.01uf   capacitor
     (24) 0.1uf    capacitor
     (2)  1uf      capacitor, unpolarized
     (2)  4.7uf    capacitor, 16V
     (2)  10uf     capacitor, 16V
     (2)  100uf    capacitor, 16V
     
     Optionally:
     
     (2) 1K or 2K +3300ppm/C' tempco resistors
     (2) MAT-02 matched NPN pair (or equivalent)
     
     Notes:
     
     * If you use the MAT-02 matched NPN pairs you won't need four of the
       2N3904's.
     
     * You should use all metal film resistors.
     
     * The caps over 1uf are tantalums, except for the 100uf's which are
       electrolytic.
     
     * The 100uf caps can be any value, really, since they are just power
       conditioning caps on the +/- 15 volt inputs. They do need to be at
       least 16V however, and not too big to fit on the PCB.
     
     * The 1uf unpolarized cap can be made from two 0.47uf non-polarized
       caps in parallel.
     
     * There are many places where the resistor values may be changed by
       the builder, such as the input structures or places where the ratio
       of two resistors sets a parameter level. These will be discussed in
       the documentation that I haven't written yet.
     
     This parts list might have a couple errors in it - it is only intended 
     to give a preliminary idea to those who might want to build one.
     
     Looks like the order for the circuit boards will be submitted this 
     week or early next week. The PCB house turn-around time is quoted at 4 
     weeks, which means really only a week or two. The prototype works 
     great on the 'scope, musical tests soon.
     
     - Gene
     gstopp at fibermux.com